On my 2010 Macbook Air, tapping on the touchpad works on about only half of the tap attempts. It seems the sensitivity or something is off. How can I fix this?
It looks like this question has been asked before and is unanswered.
First, make sure you got the mactel extras: https://launchpad.net/~mactel-support/+archive/ppa (Adding this PPA to your system)
After having those installed, type in the following commands in your terminal (ctrl-alt-t)
This makes the touchpad work much better for me :)
Create a file in /etc/X11/xorg.conf.d named 60-synaptics.conf